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    Subject[tip:sched/core] sched: Remove NORMALIZED_SLEEPER
    Commit-ID:  6bc6cf2b61336ed0c55a615eb4c0c8ed5daf3f08
    Gitweb: http://git.kernel.org/tip/6bc6cf2b61336ed0c55a615eb4c0c8ed5daf3f08
    Author: Mike Galbraith <efault@gmx.de>
    AuthorDate: Thu, 11 Mar 2010 17:17:17 +0100
    Committer: Ingo Molnar <mingo@elte.hu>
    CommitDate: Thu, 11 Mar 2010 18:32:52 +0100

    sched: Remove NORMALIZED_SLEEPER

    This feature hasn't been enabled in a long time, remove effectively dead code.

    Signed-off-by: Mike Galbraith <efault@gmx.de>
    Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
    LKML-Reference: <1268301447.6785.38.camel@marge.simson.net>
    Signed-off-by: Ingo Molnar <mingo@elte.hu>
    ---
    kernel/sched_fair.c | 10 ----------
    kernel/sched_features.h | 7 -------
    2 files changed, 0 insertions(+), 17 deletions(-)

    diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
    index 0008cc4..de98e2e 100644
    --- a/kernel/sched_fair.c
    +++ b/kernel/sched_fair.c
    @@ -742,16 +742,6 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial)
    unsigned long thresh = sysctl_sched_latency;

    /*
    - * Convert the sleeper threshold into virtual time.
    - * SCHED_IDLE is a special sub-class. We care about
    - * fairness only relative to other SCHED_IDLE tasks,
    - * all of which have the same weight.
    - */
    - if (sched_feat(NORMALIZED_SLEEPER) && (!entity_is_task(se) ||
    - task_of(se)->policy != SCHED_IDLE))
    - thresh = calc_delta_fair(thresh, se);
    -
    - /*
    * Halve their sleep time's effect, to allow
    * for a gentler effect of sleepers:
    */
    diff --git a/kernel/sched_features.h b/kernel/sched_features.h
    index c545e04..4042883 100644
    --- a/kernel/sched_features.h
    +++ b/kernel/sched_features.h
    @@ -13,13 +13,6 @@ SCHED_FEAT(FAIR_SLEEPERS, 1)
    SCHED_FEAT(GENTLE_FAIR_SLEEPERS, 1)

    /*
    - * By not normalizing the sleep time, heavy tasks get an effective
    - * longer period, and lighter task an effective shorter period they
    - * are considered running.
    - */
    -SCHED_FEAT(NORMALIZED_SLEEPER, 0)
    -
    -/*
    * Place new tasks ahead so that they do not starve already running
    * tasks
    */

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